osc52.sh + hterm + tmux not working

[Ross Zwisler]

Hi,

For some reason I'm having trouble using osc52.sh from within hterm + tmux.

This works great from within an hterm SSH session:

$ ~/trunk/src/third_party/libapps/hterm/etc/osc52.sh <<< outside_tmux

But this doesn't work from within tmux, in that same hterm SSH session:

$ ~/trunk/src/third_party/libapps/hterm/etc/osc52.sh <<< inside_tmux

I'm using tmux version 3.3a-1 as installed via apt-get on gLinux.

Potentially interesting env things from within tmux:

$ env | grep -i tmux
TMUX=/tmp/tmux-601184/default,1068430,0
TMUX_PANE=%0
TERM_PROGRAM=tmux

$ echo $TERM
xterm-256color

I'ved removed my ~/.tmux.conf so I'm pretty sure that a local config change isn't the issue.

Is anyone else seeing this issue?

Thanks!

- Ross

[Mike Frysinger]

fairly certain this is a (new) tmux feature.  please see the (new) FAQ:

https://chromium.googlesource.com/apps/libapps/+/HEAD/nassh/doc/FAQ.md#How-do-I-talk-to-hterm-from-inside-screen_tmux

-mike

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[Jason Lin]

Your tmux is 3.3a. I think you are probably hitting this https://github.com/tmux/tmux/issues/3287

Try adding set -g allow-passthrough on to your tmux config file

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Best,

Jason Lin

[Ross Zwisler]

Yep, the "allow-passthrough" option worked for me, thank you both!